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Finding the Fourth Proportional to 73,098.48, 100,869.84 and 42,880.64

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Solution

The fourth proportional to 73,098.48, 100,869.84 and 42,880.64 is: 59,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,098.48 : 100,869.84 = 42,880.64 : x
  2. Step 2: Convert to fraction form
    73,098.48/100,869.84 = 42,880.64/x
  3. Step 3: Cross multiply
    73,098.48x = 100,869.84 × 42,880.64
  4. Step 4: Simplify right side
    73,098.48x = 4,325,363,295.90
  5. Step 5: Solve for x
    x = 4,325,363,295.90/73,098.48
  6. Step 6: Final answer
    x = 59,171.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.